CounterSpy is a captivating 2.5D side-scroller game featuring stealth elements and procedurally generated levels. In a Cold War alternate reality, players take on the role of a covert agent tasked with infiltrating enemy bases to prevent the launch of nuclear weapons. The gameplay primarily unfolds on a 2D plane, with select areas allowing players to aim their weapons in 3D space. Drawing inspiration from 1960s spy fiction like James Bond, the game offers a thrilling experience with a focus on stealth kills and strategic espionage.

Players aim to gather enemy plans to advance the narrative and deactivate the base's weaponry at the end of each level. Collecting intel, the in-game currency, enables players to unlock new weapons and special formulas that enhance gameplay. Managing the DEFCON status is crucial, as it escalates when players trigger alarms or fail to handle suspicious guards. As DEFCON levels rise, players face heightened challenges, culminating in a frantic race against time to prevent a catastrophic launch. CounterSpy offers a blend of stealth, action, and espionage, ensuring an engaging gaming experience.